I was between the 19" Tempest Wheels and the 21" Arachnid Wheels. After this video, I just purchased my Tesla Model S plaid with 19" wheels! thank you so much!

Dude, this in depth analysis is incredible! I know how much work went into this, and it paid off for sure. I learned so many new words haha

@xKyriakoZ

2 жыл бұрын

hello. on teslas website if you click on 21inch wheels on US language, you see a 48 mile decrease when you do it on UK though, its only 6 miles difference. WTF? i tried talking to US live chat support about it and they just left the chat both times. stupid and aggressive support.

Just picked up my S Plaid with 21’s. It’s amazing! Thanks for the informative video.

Well done, this channel had been a good find. Thank you.

@EngineeringPerspective

2 жыл бұрын

Glad you enjoy it!

Man I love you these videos =) But please have a few easter eggs or memez in your slides. Keep up the awesome work!

@EngineeringPerspective

2 жыл бұрын

Haha, I’ll see what I can do!

Freakin love your channel. Impressive content. Hidden gem. Im liking, commenting, and forwarding your videos to help with that KZread algorithm 💯

@EngineeringPerspective

2 жыл бұрын

Thank you! really glad you enjoy it. I hope the KZread algorithm picks it up someday :)

Keep the videos coming! I'm glad I went with the 21's to be honest! I take delivery next week!

@EngineeringPerspective

2 жыл бұрын

I would go with the 21s as well. Congrats! I am hoping to find some time to get the next video out soon

You are awesome thanks for bringing it down to my level

Just ordered a 2024 S Plaid with 19" wheels. Well, I ordered one with 21" wheels and then Tesla lost the car somewhere on a dock in Baltimore, so they picked an inventory one with 19" wheels for me instead. I'm not complaining, actually. Apart from saving me over 4.000 euro, the 19" wheels are also less vulnerable to pothole and kerb damage, they provide a smoother ride, they are quieter (less road noise) and it is easier to find winter tires (which are mandatory in some EU countries during winter season). The little extra range is a bonus, but I come from an S 100D so I'm improving in that field either way. If I get tired of the look, I can always put on some (aftermarket) 20 or 21" wheels later on and keep the 19 ones for winter tires.

Good analysis !, good job ! 👍🏼

Great video! I wasn't aware of the EPA documents disclosing road load data, so I'm exited to use it as a resource going forward. Maybe we could collaborate on a video soon :)

@EngineeringPerspective

2 жыл бұрын

Glad to help! Feel free to reach out at anytime

@EndlessPlaid

2 жыл бұрын

Oh @motormatchup that would be so awesome! :)

@xKyriakoZ

2 жыл бұрын

hello. on teslas website if you click on 21inch wheels on US language, you see a 48 mile decrease when you do it on UK though, its only 6 miles difference. WTF? i tried talking to US live chat support about it and they just left the chat both times. stupid and aggressive support.

Great research

@EngineeringPerspective

2 жыл бұрын

Thank you!! Glad you enjoyed it :)

Great video! Thanks for doing the work on this. One question, possibly a dumb one: can we extrapolate this data to the (non-plaid) refreshed 2021 LR Model S?

@EngineeringPerspective

2 жыл бұрын

It would be a safe assumption to say this difference applies to the LR version as well. I have not looked up the data on the LR, but given all the external details are the same between Plaid and LR, i would assume they are very close. One thing I’m not sure about is the tire widths, if they are different, on the LR vs Plaid it may change some things.

@McQ14

2 жыл бұрын

@@EngineeringPerspective Thanks. Makes sense.

@kpv123

2 жыл бұрын

It would be a logical corollary given that the two cars are the same except for horsepower

Hey, could you do an alaysis video why the Model 3 Performance seems to be slower than a Model 3 Long Range at higher speeds? I had a Long Range and now have an M3P and can verify this, although I dont know why. Maybe the motors have a different power curve or something, I doubt wheels make a significant impact at speeds over 150 km/h.

@EmptyRoad

2 жыл бұрын

yeah, the Performance seems to trap the same speeds at the quarter mile, although it is much faster to 60. This means the LR catches up in terms of speed above a certain speed limit. Carwow also did a video where the LR overtook the M3P kzread.info/dash/bejne/mqh7uqNtfcbTd7g.html

Whats the real range between 19" and 21" by riding 70-100kmh per hour? 5, 10%? Also is it noticable difference in range between plaid and LR on same wheels?

First of all, awesome job explaining the size impact. What I have not been able to find is real data explaining the impact wheel weight has on performance (0-60) and range. So many manufacturers selling aftermarket wheels touting how much lighter they are than stock teases wheels. Saying improved performance and range but none have real data. Thoughts?? Saving 5-10 pounds per wheel, what’s the real impact?

@EngineeringPerspective

2 жыл бұрын

Glad you enjoyed it. The challenging item with wheel weights is that the polar moment of inertia is what actually matters for 0-60. it is possible to have a lighter wheel but higher inertia. Manufacturers don’t give out this value. Secondly, for range, the wheel weight won’t be as much of an effect as the rolling resistance and Aero dynamics of the wheels. Most people choose performance oriented (stickier) tires when they choose lighter wheels, that will reduce range more than the weight benefit. If range is what you are after, the tesla aero wheel design with low rolling resistance tires will be hard to beat. All of these impacts can be calculated, but aftermarket companies don’t have the engineering horsepower to do it.

S tier channel

Amazing info, but I have a question. If I installed 20" wheels that are about 2 lbs lighter than the 19's, would my car have range identical/better than the 19's? 275/35/20 all around.

@EngineeringPerspective

2 жыл бұрын

I won’t be able to give a specific answer, but typically a 20” wheel will have more rotational inertia as the mass is located at a larger diameter, even if it is overall slightly lighter. But the other items will be the difference in rolling resistance of the new tires and aerodynamic impacts.

@larryc1616

2 жыл бұрын

If you're buying lighter wheels for performance reasons, why not buy a 19" that is lighter than the 20" and stock 19"?

@Muzzman1

2 жыл бұрын

@@larryc1616 I bought the 20's because I like the fit within the wheel well. The car came with 19's, but their look was not for me. BTW bought them for the look, knowing the performance would not be affected, but my concern was how will it do on range. I have yet to do a long drive to really test it out with the 20's

Great information however, on YT there are some video's showing Plaids on 21's against 19s and the 19s win. Love my Plaid!

@EngineeringPerspective

Жыл бұрын

Yeah, the difference would be the rotational inertia and not the rolling resistance, but unfortunately I don’t have the wheel/tire info to assess

Nice video….I wonder if someone purchased forged 21 inch wheels, that were equal in weight to the 19 inch….. how would that affect the results? 🤔

@EngineeringPerspective

9 ай бұрын

the weight of the wheels and tires matter, but also where the weight is located, if more of the weight is further from the center, then the wheel will have more resistance to rotation. That is called the polar moment of inertia. Weight may be equal, but inertia may not be

If one has staggered (275's in the rear & 255's in the front) 21" Uberturbine wheels on a Model Y Performance and swapped them for 19" T-Sportline TSR wheels with NO aero cover what would you surmise based on the fact that the 19-in (255's) wheels are significantly lighter than the Uberturbine wheels. AND also the fact of moving from a staggered configuration to all 4 being the same 255's?

@jpscharged

Ай бұрын

The aero cover is 95% of the highway efficiency improvement. Only improvements from light weight wheels would be around town and a minor acceleration improvement. The aero wheels are unbeatable on the highway for range.

These numbers agree with real-world measurements I have come across. On another note, is this channel still active?

That was so well done, I'm actually left speechless. And if you ask my Wife, that's a real feat! ;)

@EngineeringPerspective

2 жыл бұрын

Thanks Floorpizza, really glad you enjoyed it!! I appreciate the feedback 👍🏻

I didn't see any discussion about the effect of tire compound and tread types. Rolling resistance is going to be the major contributor to road load at steady speeds. The 21" wheel comes with Pilot Sport 4S summer tires, which are not optimized for rolling resistance. What tires are shipped with the 19" wheels? While accelerating, the greater mass of the 21" wheels (with mass distribution further from center) requires more force to reach a given rotational speed vs. the 19". But at steady state, due to conservation of momentum, there should be little difference assuming both 19" and 21" wheels have tires with the same rubber compound and rolling resistance. For example, on my '16 Model S, I got better average efficiency from my staggered 21" wheels with Pilot Super Sports than square 19" wheels with Pilot Sport All Season 3+. I attributed that to the busy tread pattern on the AS 3+ and the UHP rubber compound.

@EngineeringPerspective

2 жыл бұрын

This is a great point, I would need to look into the tire specs to know for sure. My assumption is that the 19” has a harder compound focused on rolling resistance reduction. Tires have such a huge effect on overall vehicle performance, I don’t think the average vehicle owner realizes.

The rotational inertia definitely affects EV acceleration more the ICE acceleration because the ICE vehicles have a fly wheel. Therefore, changing the weight and size of those wheels doesn’t overcome the fact that you still have the flywheel. With EVs the lack of a flywheel means changing the rotational inertia of the wheels and tires has a much greater affect.

@EngineeringPerspective

Жыл бұрын

Inertia is inertia, the power necessary to rotationally accelerate a mass is independent and can be added to other rotationally accelerating masses. If you are saying that wheels are a smaller proportion of the total rotational mass on an EV compared to an ICE, that may be true. However the power to accelerate the wheel inertia will be the same.

@LearningFast

Жыл бұрын

@@EngineeringPerspective yes, that is what I am saying. If you reduce the mass and size of the wheel on the EV then it will be a greater proportion of the total rotational inertia than with an ICE car because the ICE car has a flywheel that adds a significant amount of rotational inertia.

why do the best channels have the lowest viewers?

@rolldeep3444

Жыл бұрын

Because they don't do it for the 💰, they do it for love of the content.

btw i dont really remember from what channel but i remember frantz saying to them that the battery limits the plaid to 1020 hp the motors (i dont really remember the exact number) are capable of 1100-1300 hp

@EngineeringPerspective

2 жыл бұрын

This is a topic that comes up a lot, I have been trying to collect information on the plaid battery for a potential future video. Not a lot of public info on the details of it yet

@larryc1616

2 жыл бұрын

@@EngineeringPerspective would love to see a video on the maximum potential of the Plaid tri-motors and the batteries if someone was to hack the software. other 2,000hp Supercar EV's have quad-motors, so some have theorized the plaid tri-motors/batteries can be good for up to 1,500hp. we know the Plus update will bump it from 1000hp to 1,100. what's its max potential?

@Peter-kn8py

2 жыл бұрын

Makes sense, since the Plaid+ was probably going to use the same motors but with a larger battery capable of outputting more power.

21" The New Aero Wheel compared to the OEM Tesla Wheels?

The efficiency is not replacing rear tires every 5k miles 💀

This is a glimpse of what the Internetz could have been. * sigh *

Wait a minute! Good analysis, but your final statement was messed up. You should have said the 19 inch are good for range and only lose a maximum of 2 horsepower at 70 mph. You made it look like the 21s are better for Speed when the difference is negligible. Plus you left out that the 19s are more comfortable and less prone to rim damage from potholes.

@EngineeringPerspective

2 жыл бұрын

Thanks for watching, Sorry it wasn’t clear for you. The 19 inch wheels use less power due to lower rolling resistance, however, that power difference due to rolling resistance is so small it should be considered negligible for acceleration.

So, I have both the 21" and 19" wheels -- is there a simple way to figure out the polar moment of interia that mere mortals can handle?

@EngineeringPerspective

2 жыл бұрын

It would require some sort of setup either a ramp marked with distances and a cameras or some sort of pulley system with a weight… it wouldn’t be super easy. Typically in the engineering world, I could pull the value from the CAD data… but I don’t have that. I really do appreciate the offer! Let me think if there is an easier way..

@ElectricMoose

2 жыл бұрын

@@EngineeringPerspective Ah, OK. BTW I have done back-2-back 0-60 runs and seen only 0.1 sec difference between 19s and 21s (measured via Dragy) so that seems to line up with your graphs. I'd also attribute some of the delta to be traction between summer tires (21s) vs all seasons (19s)

@scottw595

2 жыл бұрын

@@ElectricMoose your 19s are all season? Heard they are not.

@ElectricMoose

2 жыл бұрын

@@scottw595 I purchased the 19s thru Parts then got Michelin Pilot Sport All Season 4s separately.

@scottw595

2 жыл бұрын

@@ElectricMoose how much did that cost?

What is your favorite Tesla?

@EngineeringPerspective

2 жыл бұрын

The new Tesla roadster… if it ever makes it to production!

hello. on teslas website if you click on 21inch wheels on US language, you see a 48 mile decrease when you do it on UK though, its only 6 miles difference. WTF? i tried talking to US live chat support about it and they just left the chat both times. stupid and aggressive support.

@EngineeringPerspective

2 жыл бұрын

I just looked into this... I also checked the German page and the difference is 9km so about the 6 miles you see. I believe this is because there are different rating systems in Europe. In the US we have EPA test cycles, in Europe they are using the World harmonized (WLTP). So based on how they test, it may offer a smaller range difference. In the real world, you will certainly get more range with the 19"

@xKyriakoZ

2 жыл бұрын

@@EngineeringPerspective yes for sure man but idk if I'll get like 5-10 or 50 miles more it's a pretty huge difference.. and now idk which one to order cause I like the 21inch

@EngineeringPerspective

2 жыл бұрын

@@xKyriakoZ if i was ordering, i would choose the 21” just for the styling. plus it has been very rare that I have needed more than 300 miles of range in my Model 3. for some people, that may matter more.

@xKyriakoZ

2 жыл бұрын

@@EngineeringPerspective hmm yea but its both consuming more electricity and lasting less. thanks for your opinion tho

@EngineeringPerspective

2 жыл бұрын

@@xKyriakoZ logically, the 19” makes more financial sense. I agree.

model x please~~

Comeback bro

@EngineeringPerspective

2 жыл бұрын

Sorry everyone, This channel has fallen off my plate due to lots of reasons, but hopefully I can get back to it soon!! Thanks for the comment, it is motivational

I just can’t believe ppl would buy a 100K+ car with hud caps. Aero are hideous. Range not a dramatic difference

@EngineeringPerspective

2 жыл бұрын

yeah, they are functional but not attractive

That's nothing! In Thailand, even the so called "VIP" overland buses have SQUARE TIRES!! I bet you think I am joking. Travel on one and get back to me.

Ah the joy of using imperial units in physics ...

@EngineeringPerspective

2 жыл бұрын

Lol, at least it wasn’t in furlongs per fortnight

elecricity is allready much cheaper than gasolin so whole video pointles

@EngineeringPerspective

2 жыл бұрын

This video is not related to the price of electricity